Lubricator



UNITED STATES PATENT OFFICE.

JAS F. MONROE, OF FITOHBURG, MASSACHUSETTS.

LUBRICATOR.

Specification of Letters Patent No.

To all 'whom it may concern Be it known that I, Jas. F. MoNRon, of Fitchburg, in the county of Vorcester and State of Massachusetts, have invented certain new and useful Improvements in Lubricating-Cups for Oiling Steam lIachinery, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, making part of this speciication, in which- Figure l is a. plan; Fig. 2, a vertical sec tion upon the line A A of Fig. l; Fig. 3, a horizontal section upon the line B B of Fig. 2; Fig. 4, a horizontal section upon the line C C of Fig. 2.

It has long been a desideratum to make use of tallow for the purpose of lubricating the cylinders of steam engines, but no suitable method has been known of keeping the tallow constantly in a molten state and ready for use.

My invention has for its object to enable me to employ this substance for the purpose, and consists in surrounding the lubricating cup with a steam chamber whereby the lu bricating material is always preserved in a liquid state ready for use as will be hereafter more fully explained, and my inven tion also consists in so arranging the parts through which the lubricating material is delivered to the cylinder that the pressure of the steam within the cylinders shall always tend to close them, whereby the joints are kept tight and leakage of steam is avoided.

To enable others skilled in the art to understand my invention, I will proceed to describe the manner in which I have carried it out.

In the accompanying drawings D is the lubricating cup, the bot-tom of which forms the upper seat oil the plug or valve E, and is perfo-rated for the passage of the stem F, of the valve. Through the bottom of the lubricating cup there are two holes corresponding to the two holes a, and b, in the top of the plug. One of these holes in the cup is left open for the passage of the tallow, and into the other is fitted the tube or pipe Gr, the object of which will be presently explained. The plug E, is of the form represented in section in Fig. Q, and lits closely upon its seat on the bottom of the lubricating cup. Its interior dimensions are such as to enable it to contain the amount of lubri- 16,018, dated November 4, 1856.

eating material which at any one time may be required within the cylinder. Beneath the plug is fitted with a tight joint the plate H which is prevented from turning by the pins f, that enter the straps I when the cup is not in use. This plate H, is held up against the plug E, and the latter up against its seat upon the bottom of the cup by the spring K. When in operation the parts are all held in place by the pressure of the steam which tends constantly to keep the joints tight and prevent leakage of steam. Through the bottom of the plug is the hole h, which corresponds in a certain position of the plug to the hole z' in the plate H. The plug E is revolved by means of the handle L, attached to its shaft.

The whole of the apparatus thus described is surrounded by the casing M, between which and the lubricating cup` there is a space, which is brought into communication with the steam in the cylinder, and thus the cup is kept constantly heated and the lubricating material which it contains is constantly maintained in a liquid state. I am thus enabled to employ tallow for the purpose of lubricating the cylinder, a material peculiarly adapted to the purpose and costing much less than the oils heretofore employed for the purpose.

Operation: When the plug E, is turned in a certain position, one of the holes through the bottom of the lubricating cup falls over the hole in the plug and the molten tallow or other lubricating material flows into the plug, any steam or air which may remain in the latter passing oit through the tube Gr. lhen the plug is again turned, the holes a, and are closed and the communication is cut oit between the plug and either the lubricating cup or the external air. In another position o the plug its hole h, is made to correspond with the hole z', in the plate H, and the liquid within the plug passes down to the cylinder. 1iWhen in use the plug is turned so as to open the passage from the lubricating cup to the plug. IVhen in this position the holes L, and 2', are also closed and the steam from the cylinder is prevented from entering the plug. IVhen the plug is turned so as to permit the tallow to flow out of the plug into the cylinder the holes a, and Z), are closed and the steam in t-he plug is prevented from blowing out.

In lieu of surrounding the lubricating cup combined with each other and with the luby a steam chamber, as above described, it bricating cup for the purpose set forth.

may be surrounded by a coil of pipe filled i with steam and the same end will be gained. JAMES F' MONROE' 5 Vhat I claim as my invention and desire lltnesses:

to secure by Letters Patent is SAMUEL HAUS,

The plate H and plug E as arranged and J. M. SAWTELL. 

